Texas Instruments OMAP5912 Reference Manual page 1600

USB OTG Controller
USB Host With Transceiverless Link Logic (TXVP/TXVM)
Figure 87. OMAP5912 as USB Host Controller on Transceiverless Link Using
TXVP/TXVM Signaling
U1
MCSI2.DOUT/USB2.TXEN
UART2.TX/USB2.TXD
UART2.RTS/USB2.SE0
UART2.CTS/USB2.RCV
MCSI2.DIN/USB2.VP
UART2.RX/USB2.VM
OMAP5912 acts as the
USB host on the
transceiverless link
OMAP5912
308 Universal Serial Bus (USB)
OTG_SYSCON_1.USB2_TRX_MODE must be set to 3 to allow proper
operation of the transceiverless link logic connection. TLL_SPEED must be 1
when using the OMAP5912 USB device controller with transceiverless link
logic.
RCVVM
Proper initialization of the OMAP5912 device to support this mode of operation
requires proper setting of the top-level pin multiplexing for these pins:
-
MCSI2.DOUT/USB2.TXEN
-
UART2.TX/USB2.TXD
-
UART2.RTS/USB2.SE0
-
UART2.CTS/USB2.RCV
-
MCSI2.DIN/USB2.VP
-
UART2.RX/USB2.VM
See Table 74.
RCV
RCV
RCVVM
RCVVP
RCVVP
TXOE
TXOE
TXVM
TXVM
TXVP
TXVP
USB device
U2
This device acts as the
USB device on the
transceiverless link
SPRU761A